Is it IS or not?EF-S 24mm has NOT Image Stabilizer.
So someone should correct the first post:
Canon EF-S 24mm f/2.8 IS STM Specifications
Wide-angle lens for Canon APS-C cameras (equivalent to 38mm on a full-frame camera) offers an ultra-slim and lightweight design.
Slimmest and lightest lens of the EF-S series (approx. lens width is 0.9 in, or slightly wider than a U.S. nickel).